曲线x^2/10-m+y^2/6-m=1(m,
问题描述:
曲线x^2/10-m+y^2/6-m=1(m,
答
A
解析:
椭圆x^2/10-m+y^2/6-m=1(m,双曲线x^2/5-n+y^2/9-n=1(5
双曲线-x^2/5+y^2/9=1同焦点.(a=9)
满足10-9=16-5=1